From d3cbf96c57378129e3730897702cf781c8947e27 Mon Sep 17 00:00:00 2001
From: Dane Everitt <dane@daneeveritt.com>
Date: Fri, 10 Apr 2020 16:14:04 -0700
Subject: [PATCH] Avoid race condition while calculating directory size of
 server

---
 server/filesystem.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/server/filesystem.go b/server/filesystem.go
index 02b6e2b..e597269 100644
--- a/server/filesystem.go
+++ b/server/filesystem.go
@@ -18,6 +18,7 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 )
 
@@ -170,10 +171,11 @@ func (fs *Filesystem) DirectorySize(dir string) (int64, error) {
 				defer wg.Done()
 
 				s, _ := fs.DirectorySize(p)
-				size += s
+
+				atomic.AddInt64(&size, s)
 			}(filepath.Join(cleaned, f.Name()))
 		} else {
-			size += f.Size()
+			atomic.AddInt64(&size, f.Size())
 		}
 	}